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Message-ID: <20090818175345.61f7485c@mycelium.queued.net>
Date: Tue, 18 Aug 2009 17:53:45 -0400
From: Andres Salomon <dilinger@...labora.co.uk>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
cjb@...top.org, deepak@...top.org, linux-geode@...ts.infradead.org,
Jordan Crouse <jordan@...micpenguin.net>,
Tobias_Mueller@...m.info
Subject: [PATCH 3/3] ALSA: cs5535audio: free OLPC quirks from reliance on
MGEODE_LX cpu optimization
Previously, OLPC support for the mic extensions was only enabled in the
ALSA driver if CONFIG_OLPC and CONFIG_MGEODE_LX were both set. This was
because the old geode GPIO code was written in a manner that assumed
CONFIG_MGEODE_LX. With the new cs553x-gpio driver, this is no longer the
case; as such, we can drop the requirement on CONFIG_MGEODE_LX and instead
include a requirement on GPIOLIB.
We use the generic GPIO API rather than the cs553x-specific API.
Signed-off-by: Andres Salomon <dilinger@...labora.co.uk>
---
arch/x86/Kconfig | 1 +
arch/x86/include/asm/olpc.h | 2 +-
sound/pci/cs5535audio/Makefile | 2 --
sound/pci/cs5535audio/cs5535audio.c | 1 +
sound/pci/cs5535audio/cs5535audio.h | 4 +++-
sound/pci/cs5535audio/cs5535audio_olpc.c | 26 +++++++++++++++++++-------
6 files changed, 25 insertions(+), 11 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 13ffa5d..4bae2f8 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2022,6 +2022,7 @@ config GEODE_MFGPT_TIMER
config OLPC
bool "One Laptop Per Child support"
+ select GPIOLIB
default n
---help---
Add support for detecting the unique features of the OLPC
diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h
index 834a302..3a57385 100644
--- a/arch/x86/include/asm/olpc.h
+++ b/arch/x86/include/asm/olpc.h
@@ -120,7 +120,7 @@ extern int olpc_ec_mask_unset(uint8_t bits);
/* GPIO assignments */
-#define OLPC_GPIO_MIC_AC geode_gpio(1)
+#define OLPC_GPIO_MIC_AC 1
#define OLPC_GPIO_DCON_IRQ geode_gpio(7)
#define OLPC_GPIO_THRM_ALRM geode_gpio(10)
#define OLPC_GPIO_SMB_CLK geode_gpio(14)
diff --git a/sound/pci/cs5535audio/Makefile b/sound/pci/cs5535audio/Makefile
index fda7a94..ccc6422 100644
--- a/sound/pci/cs5535audio/Makefile
+++ b/sound/pci/cs5535audio/Makefile
@@ -4,9 +4,7 @@
snd-cs5535audio-y := cs5535audio.o cs5535audio_pcm.o
snd-cs5535audio-$(CONFIG_PM) += cs5535audio_pm.o
-ifdef CONFIG_MGEODE_LX
snd-cs5535audio-$(CONFIG_OLPC) += cs5535audio_olpc.o
-endif
# Toplevel Module Dependency
obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o
diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c
index 05f56e0..91e7faf 100644
--- a/sound/pci/cs5535audio/cs5535audio.c
+++ b/sound/pci/cs5535audio/cs5535audio.c
@@ -389,6 +389,7 @@ probefail_out:
static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
{
+ olpc_quirks_cleanup();
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h
index 7a298ac..51966d7 100644
--- a/sound/pci/cs5535audio/cs5535audio.h
+++ b/sound/pci/cs5535audio/cs5535audio.h
@@ -99,10 +99,11 @@ int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
int snd_cs5535audio_resume(struct pci_dev *pci);
#endif
-#if defined(CONFIG_OLPC) && defined(CONFIG_MGEODE_LX)
+#ifdef CONFIG_OLPC
void __devinit olpc_prequirks(struct snd_card *card,
struct snd_ac97_template *ac97);
int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97);
+void __devexit olpc_quirks_cleanup(void);
void olpc_analog_input(struct snd_ac97 *ac97, int on);
void olpc_mic_bias(struct snd_ac97 *ac97, int on);
@@ -128,6 +129,7 @@ static inline int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
{
return 0;
}
+static inline void olpc_quirks_cleanup(void) { }
static inline void olpc_analog_input(struct snd_ac97 *ac97, int on) { }
static inline void olpc_mic_bias(struct snd_ac97 *ac97, int on) { }
static inline void olpc_capture_open(struct snd_ac97 *ac97) { }
diff --git a/sound/pci/cs5535audio/cs5535audio_olpc.c b/sound/pci/cs5535audio/cs5535audio_olpc.c
index 5c68143..50da49b 100644
--- a/sound/pci/cs5535audio/cs5535audio_olpc.c
+++ b/sound/pci/cs5535audio/cs5535audio_olpc.c
@@ -13,10 +13,13 @@
#include <sound/info.h>
#include <sound/control.h>
#include <sound/ac97_codec.h>
+#include <linux/gpio.h>
#include <asm/olpc.h>
#include "cs5535audio.h"
+#define DRV_NAME "cs5535audio-olpc"
+
/*
* OLPC has an additional feature on top of the regular AD1888 codec features.
* It has an Analog Input mode that is switched into (after disabling the
@@ -38,10 +41,7 @@ void olpc_analog_input(struct snd_ac97 *ac97, int on)
}
/* set Analog Input through GPIO */
- if (on)
- geode_gpio_set(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL);
- else
- geode_gpio_clear(OLPC_GPIO_MIC_AC, GPIO_OUTPUT_VAL);
+ gpio_set_value(OLPC_GPIO_MIC_AC, on);
}
/*
@@ -73,8 +73,7 @@ static int olpc_dc_info(struct snd_kcontrol *kctl,
static int olpc_dc_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v)
{
- v->value.integer.value[0] = geode_gpio_isset(OLPC_GPIO_MIC_AC,
- GPIO_OUTPUT_VAL);
+ v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC);
return 0;
}
@@ -153,6 +152,12 @@ int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
if (!machine_is_olpc())
return 0;
+ if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) {
+ printk(KERN_ERR DRV_NAME ": unable to allocate MIC GPIO\n");
+ return -EIO;
+ }
+ gpio_direction_output(OLPC_GPIO_MIC_AC, 0);
+
/* drop the original AD1888 HPF control */
memset(&elem, 0, sizeof(elem));
elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
@@ -169,11 +174,18 @@ int __devinit olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) {
err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i],
ac97->private_data));
- if (err < 0)
+ if (err < 0) {
+ gpio_free(OLPC_GPIO_MIC_AC);
return err;
+ }
}
/* turn off the mic by default */
olpc_mic_bias(ac97, 0);
return 0;
}
+
+void __devexit olpc_quirks_cleanup(void)
+{
+ gpio_free(OLPC_GPIO_MIC_AC);
+}
--
1.6.3.3
--
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